Oh man, I read an article about that exact thing recently.

Recall how every infomercial promises to fix a problem we never knew we had. Those avocado slicers and lemon juicers just add steps and dirty dishes. Do you believe there's a secret plan among kitchen gadget makers to keep us busy cleaning up messes? I've started avoiding any tool that can't be washed in under thirty seconds. What's the one gadget you regret buying the most?